Kotlin · Jetpack Compose · Android SDK
I build and support Android applications in Kotlin and Java, alongside cross-platform products in Flutter. My work spans national healthcare, connected medical devices, secure messaging and industrial RFID integrations.
Mobile Engineer
Production features for Alhosn, the UAE national health app. Kotlin Multiplatform business logic and Jetpack Compose flows for vaccinations, medical records, activity and hydration. Resolved state, synchronization and real-time issues; contributed interactive AI-assistant scenarios for internal stakeholder reviews.
Senior Software Developer · Mobile / Embedded Systems
Built the mobile side of an Android/iOS continuous glucose monitoring system with Flutter and native integrations: BLE sensor communication, measurement processing and synchronization, adaptive charts, CSV export and business-logic tests. Helped design BLE data formats and debugged app, firmware and Nordic nRF52832 interactions on real devices.
Android Developer · Concurrent contract
Android features for a secure corporate messenger. Worked with end-to-end encryption and Keycloak authentication; implemented self-hosted Gotify push notifications and background event delivery without Firebase Cloud Messaging.
Mobile / Backend / Frontend Developer
Android/Flutter applications for Moscow Metro RFID navigation and operational workflows. Integrated UHF equipment through a Java bridge to the vendor Android SDK and Flutter Method Channels for scan, inventory, read and write operations. Built a FastAPI/Python and EasyOCR workflow for employee-card recognition and form filling.
Flutter / iOS / Frontend / Full-Stack Developer
Mobile products using Flutter and native platforms in a distributed team. Integrated native SDKs, WebRTC/Jitsi, push notifications and backend services; built Flutter/native/WebView bridges and supported UI development, debugging, dependencies and production builds.
Selected contributions; product ownership and scope are described individually.
National health application · Team contribution
Kotlin Multiplatform and Jetpack Compose. Medical records, vaccination, activity, hydration and application state.
Connected medical device
BLE sensor connectivity, continuous measurement processing, synchronization, charts, exports and business-logic testing with real hardware.
Corporate communications
Android functionality, end-to-end encryption, Keycloak authentication and self-hosted background push delivery through Gotify.
Industrial Android integration
Vendor Android SDK bridged through Java and Flutter Method Channels for hardware scanning, inventory and read/write operations.
Independent Android & iOS release
Approximately 15,000 installs, localization in 19 languages and more than two years of maintenance.
Exploratory mobile project
Flutter UI, native clients, a shared Rust module through FFI/C ABI and Android .so packaging.
Master’s degree / Research Chemist · 2009
Training in experimental research, data analysis and complex technical systems.
Chinese language courses · 2012
Frontend / Mobile Developer · Feb – Apr 2020 · China
Vue.js enterprise web/admin interfaces and React Native mobile screens.
Founder / Full-Stack Web Developer · Jul 2012 – Dec 2019 · Shenzhen
Client web projects from requirements to production and support, large catalogues and e-commerce systems, infrastructure, content automation and external API integrations.
Android development, mobile products and integrations with real hardware.
hvw@ya.ru+7 909 159 58 02A public PDF link for job application forms. No sign-in required.
https://android.dabaga.cc/cv/android/en.pdf